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September Weather in San Basilio, Argentina

Last updated: August 22, 2025

In San Basilio, Argentina, the average temperature in September hovers around 15°C (59°F). However, be prepared for a range of temperatures, with minimums dipping to -2°C (29°F) and maximums soaring to 34°C (94°F). This month sees an average precipitation of 34 mm (1.3 in) spread over 5 days, and the humidity levels are around 56%, creating a unique climate experience.

September Temperature in San Basilio

In September, in San Basilio, the average temperature is 15°C (59°F). Maximums can reach 34°C (94°F), and minimums can drop as low as -2°C (29°F). Travelers should be prepared for a wide range of temperatures, making layering essential for a comfortable visit.

September Weather in San Basilio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Basilio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Basilio, September typically has an average temperature of 15°C (59°F), with highs reaching up to 34°C (94°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec757369655650495459647175
Data source: Temperature data for San Basilio generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in San Basilio

In San Basilio in September, the precipitation amount is 34 mm (1.3 in) over the course of 5 days.

September Precipitation Trends in San Basilio

The chart displays monthly precipitation patterns in San Basilio, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In San Basilio, September typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec9863928544189534478065
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Basilio

In San Basilio in September humidity is 56%. With an average temperature of 15°C (59°F), this humidity feels like a refreshing yet slightly damp embrace, making it an ideal time for exploring the surroundings without the discomfort of sweltering heat.

September Average Humidity in San Basilio

This chart illustrates the average monthly humidity levels in San Basilio, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in San Basilio is approximately 56%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec45%52%63%74%78%71%57%53%56%50%54%47%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Basilio

In San Basilio in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in San Basilio.

Maximum UV Index Levels in San Basilio for September

The chart shows the monthly maximum UV Index (UVI) for San Basilio in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in San Basilio typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854468111414
Data source: San Basilio September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in San Basilio Compares to Other Months

Weather in San Basilio varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Basilio, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Basilio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)98 mm (3.9 inches)45%extreme
February Weather23°C (73°F)63 mm (2.5 inches)52%extreme
March Weather21°C (70°F)92 mm (3.6 inches)63%extreme
April Weather18°C (65°F)84 mm (3.3 inches)74%very high
May Weather14°C (57°F)44 mm (1.7 inches)78%moderate
June Weather10°C (50°F)18 mm (0.7 inches)71%moderate
July Weather9°C (49°F)9 mm (0.4 inches)57%moderate
August Weather12°C (54°F)5 mm (0.2 inches)53%high
September Weather15°C (59°F)34 mm (1.3 inches)56%very high
October Weather18°C (64°F)47 mm (1.8 inches)50%extreme
November Weather21°C (71°F)80 mm (3.2 inches)54%extreme
December Weather24°C (75°F)65 mm (2.6 inches)47%extreme

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